# Physics

What is the angle of refraction of a light ray that enters the surface of a calm lake from air at an angle of 45 degrees to the normal? The refractive index of water is 1.333.

32.04

45.00

59.99

33.76

I was thinking A or D

1. 👍 0
2. 👎 0
3. 👁 86
1. 32.04
r=sin⁻¹(sini/n)

1. 👍 0
2. 👎 0
posted by Elena

## Similar Questions

1. ### Physics

1) The speed of light in a certain liquid is 3/5 the speed in a vacuum. What is the index of refraction of the liquid? 2) A ray of light strikes a piece of glass (n=1.52) and makes an angle of 50 degrees with the surface. What

asked by Ninzy on February 16, 2011
2. ### Physics

1) The speed of light in a certain liquid is 3/5 the speed in a vacuum. What is the index of refraction of the liquid? 2) A ray of light strikes a piece of glass (n=1.52) and makes an angle of 50 degrees with the surface. What

asked by Ninzy on February 16, 2011

Two slabs with parallel faces are made from different types of glass. A ray of light travels through air and enters each slab at the same angle of incidence. Which slab has the greater index of refraction and why? slab A is a

asked by Mary on November 6, 2007
4. ### Physics

Two light rays, one red and one violet, encounter a glass surface. If the index of refraction of the red light ray = 1.52, the index of refraction of the violet light ray = 1.54, and the angle of incidence = 30 degrees, calculate

asked by Kid on October 30, 2015
5. ### physics

a ray of light in air enters a glass surface at right angles to the surface. what is the angle of refraction

asked by bi on November 22, 2012
6. ### Physics 11

A student performs an experiment. On her desk, she directs a light ray at the flat surface of an unknown transparent material at an angle to the normal of 47 degrees. The light ray enters the material at an angle to the normal of

asked by Kayla on June 15, 2017
7. ### Physics

A ray of light of frequency 5.09 x 10^14 Hz passes from air into flint glass (n=1.6). a.) If the ray enters the flint glass at an angle of 30*, what is the angle of refraction? b.) What is the critical angle for a ray of light

asked by Nathaniel on June 12, 2006
8. ### Physics

An aquarium filled with water has flat glass sides whose index of refraction is 1.48. A beam of light from outside the aquarium strikes the glass at a 43.5º angle to the perpendicular . The angle this light ray enters the glass